Two in inseparable unity of buddhahood. Or union of wisdom (emptiness) and spontaneous present skilful means by compassion.

Rupakaya seen from sutra; by ( take about tree kalpas is me said) practices like perfection morality, generosity, meditation, patience..Rupakaya Dzogchen by rainbow body of light. That can manifest as Nirmanakaya to help.

Dharmakaya and Rupakaya are not separated in Bodhi, not separate in so called Absolute Bodhichitta.

These are two, primordial purity and spontaneous presence. Is it not the spontaneous presence of the rupakaya that leads to Boddhicitta?

In Dzogchen, bodhicitta is synonymous with rigpa. Within rigpa, all kayas are perfected primordially. And primordial purity and spontaneous presence only seem like two because they are two terms to explain different aspects of rigpa. But they are inseparable.

These are two, primordial purity and spontaneous presence. Is it not the spontaneous presence of the rupakaya that leads to Boddhicitta?

In Dzogchen, bodhicitta is synonymous with rigpa. Within rigpa, all kayas are perfected primordially. And primordial purity and spontaneous presence only seem like two because they are two terms to explain different aspects of rigpa. But they are inseparable.